Andy Polyakov 64d92d7498 x86_64 assembly pack: "optimize" for Knights Landing, add AVX-512 results. ... "Optimize" is in quotes because it's rather a "salvage operation" for now. Idea is to identify processor capability flags that drive Knights Landing to suboptimial code paths and mask them. Two flags were identified, XSAVE and ADCX/ADOX. Former affects choice of AES-NI code path specific for Silvermont (Knights Landing is of Silvermont "ancestry"). And 64-bit ADCX/ADOX instructions are effectively mishandled at decode time. In both cases we are looking at ~2x improvement. AVX-512 results cover even Skylake-X :-) Hardware used for benchmarking courtesy of Atos, experiments run by Romain Dolbeau <romain.dolbeau@atos.net>. Kudos! Reviewed-by: Rich Salz <rsalz@openssl.org>		2017-07-21 14:07:32 +02:00
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asm	x86_64 assembly pack: "optimize" for Knights Landing, add AVX-512 results.	2017-07-21 14:07:32 +02:00
build.info
chacha_enc.c